External Email - Use Caution
Dear Freesurfer Mailing List,
I am trying to calculate the effect size of the main and interaction effect clusters that were significant in my vertex-wise LME analysis. For this I need the degrees of freedom for each contrast, but I am confused about how to derive this. My input sample has 218 subjects (153 with 2 time-points, 65 with 1 time-point). The effects for which I need the degrees of freedom are: 1) Main effect of years in the control group (n=112) 2) Main effect of years in the case group (n=106) 3) Main effect of group at baseline (group has two levels, 0 or 1) 4) Interaction between years and group
Any assistance you can provide would be great.
Kind regards,
Bronwyn Overs
Research Assistant
Neuroscience Research Australia Margarete Ainsworth Building Barker Street Randwick Sydney NSW 2031 Australia M 0411 308 769 T +61 2 9399 1725
[ http://neura.edu.au/ | neura.edu.au ]
[ https://twitter.com/neuraustralia | Twitter ] | [ https://www.facebook.com/NeuroscienceResearchAustralia | Facebook ] | [ http://www.neura.edu.au/help-research/subscribe | Subscribe ]
